81352957440

Names of 81352957440

• Cardinal: 81352957440 can be written as Eighty-one billion, three hundred fifty-two million, nine hundred fifty-seven thousand, four hundred forty.

Scientific notation

• Scientific notation: 8.135295744 × 10¹⁰

Factors of 81352957440

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 1105

Divisors of 81352957440

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 61 64 80 96 120 122 128 160 183 192 211 240 244 256 305 320 366 384 422 480 488 512 610 633 640 732 768 823 844 915 960 976 1055 1220 1266 1280 1464 1536 1646 1688 1830 1920 1952 2110 2440 2469 2532 2560 2928 3165 3292 3376 3660 3840 3904 4115 4220 4880 4938 5064 5856 6330 6584 6752 7320 7680 7808 8230 8440 9760 9876 10128 11712 12345 12660 12871 13168 13504 14640 15616 16460 16880 19520 19752 20256 23424 24690 25320 25742 26336 27008 29280 31232 32920 33760 38613 39040 39504 40512 46848 49380 50203 50640 51484 52672 54016 58560 64355 65840 67520 77226 78080 79008 81024 93696 98760 100406 101280 102968 105344 108032 117120 128710 131680 135040 150609 154452 156160 158016 162048 173653 193065 197520 200812 202560 205936 210688 234240 251015 257420 263360 270080 301218 308904 316032 324096 347306 386130 395040 401624 405120 411872 421376 468480 502030 514840 520959 526720 540160 602436 617808 632064 694612 753045 772260 790080 803248 810240 823744 868265 1004060 1029680 1041918 1053440 1204872 1235616 1264128 1389224 1506090 1544520 1580160 1606496 1620480 1647488 1736530 2008120 2059360 2083836 2106880 2409744 2471232 2604795 2778448 3012180 3089040 3160320 3212992 3294976 3473060 4016240 4118720 4167672 4819488 4942464 5209590 5556896 6024360 6178080 6320640 6425984 6589952 6946120 8032480 8237440 8335344 9638976 9884928 10419180 10592833 11113792 12048720 12356160 12851968 13892240 16064960 16474880 16670688 19277952 19769856 20838360 21185666 22227584 24097440 24712320 25703936 27784480 31778499 32129920 32949760 33341376 38555904 41676720 42371332 44455168 48194880 49424640 52964165 55568960 63556998 64259840 66682752 77111808 83353440 84742664 88910336 96389760 98849280 105928330 111137920 127113996 128519680 133365504 158892495 166706880 169485328 192779520 211856660 222275840 254227992 266731008 317784990 333413760 338970656 385559040 423713320 444551680 508455984 635569980 666827520 677941312 847426640 1016911968 1271139960 1333655040 1355882624 1694853280 2033823936 2542279920 2711765248 3389706560 4067647872 5084559840 5423530496 6779413120 8135295744 10169119680 13558826240 16270591488 20338239360 27117652480 40676478720 81352957440
• Sum of all divisors σ(n): 265914266112
• Sum of proper divisors (its aliquot sum) s(n): 184561308672
• 81352957440 is an abundant number, because the sum of its proper divisors (184561308672) is greater than itself. Its abundance is 103208351232

Bases of 81352957440

• Binary: 1001011110001000000111001111000000000₂
• Hexadecimal: 0x12F1039E00
• Base-36: 11DFG7PC

Squares and roots of 81352957440

• 81352957440 squared (81352957440²) is 6618303684234451353600
• 81352957440 cubed (81352957440³) is 538418577948520519951171190784000
• The square root of 81352957440 is 285224.3983953685
• The cube root of 81352957440 is 4333.0242060087

Scales and comparisons

• 81,352,957,440 seconds is equal to 2,586 years, 40 weeks, 1 day, 3 hours, 44 minutes.
• To count from 1 to 81,352,957,440 would take you about five thousand, one hundred seventy-three years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 81352957440 cubic inches would be around 361.1 feet tall.

Recreational maths with 81352957440

• 81352957440 backwards is 04475925318
• 81352957440 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81352957440's digits is 48
• More coming soon!